






RLX COMPONENTS s.r.o. , Electronic Components Distributor.
RLX COMPONENTS s.r.o. , Electronic Components Distributor.
ESP32-S3-LR1121-OLED-1.54 LoRa Voice Dev.Board, LR1121 Third-Generation RF Chip, Sub-GHz and 2.4GHz (WS-35900) LF
ESP32-S3-LR1121-OLED-1.54 LoRa Development Board, LR1121 Third-Generation RF Chip, Sub-GHz and 2.4GHz Support, Voice Interaction
Equipped with the LR1121 RF chip for long-range voice transmission via LoRa

ESP32-S3-LR1121-OLED-1.54-HF-EN
HF version, without Lithium Batt
ESP32-S3-LR1121-OLED-1.54-HF
HF version, comes with a 3.7V Lithium Batt
ESP32-S3-LR1121-OLED-1.54-LF-EN
LF version, without Lithium Batt
ESP32-S3-LR1121-OLED-1.54-LF
LF version, comes with a 3.7V Lithium Batt
* For more information on the parameters of the HF and LF versions, please refer to our Wiki. Please select the frequency version according to the local radio regulations before placing an order.
| Display Parameters | Operating Voltage | 3.3V / 5V | Display Panel | OLED |
|---|---|---|---|---|
| Resolution | 128 × 64 pixels | Pixel Size | 0.25 × 0.25 mm | |
| Communication Interface | I2C | Driver IC | SSD1309 | |
| RF Parameters | RF Chip | LR1121 | Operating Voltage | 3.3V |
| Communication Interface | SPI | Modulation | LoRa, (G)FSK, LR-FHSS |
This high-performance, highly integrated LoRa wireless communication development board designed by Waveshare, features a dual-band LoRa RF module, audio codec, and power management solution, providing a versatile platform for long-range wireless communication and voice interaction development.
Combines a lightweight design with high strength. The anodized surface offers enhanced wear and scratch protection, ideal for frequent everyday carry

The whip antenna features vertical polarization and 360° horizontal omnidirectional coverage, making it suitable for fixed wireless nodes and point-to-multipoint communication. The Mini WiFi antenna is designed for the 2.4GHz band, delivering reliable RF performance and adaptability to various environments for stable wireless communication in challenging conditions.
Flexible Whip With
Moderate Bend Tolerance
360° Horizontal
Coverage
Good Gain Performance And
Low VSWR
The LR1121 supports both LoRa Chirp Spread Spectrum (CSS) and Frequency Hopping Spread Spectrum (FHSS) technologies, with modulation coverage across Sub-GHz, S-band, and 2.4GHz ISM frequency bands.

This frequency band is globally license-free and is ideal for short-range, high-speed data transmission

Comprehensive ESP-IDF and Arduino tutorials for easy learning. Facilitates secondary development and function expansion, accelerating application deployment


Balenie Obsahuje / Package Content